{"id":5602,"date":"2022-04-24T13:12:30","date_gmt":"2022-04-24T05:12:30","guid":{"rendered":"http:\/\/123.57.164.21\/?p=5602"},"modified":"2022-04-24T13:12:30","modified_gmt":"2022-04-24T05:12:30","slug":"swiftui-%e8%a7%86%e5%9b%be%e7%9a%84%e7%94%9f%e5%91%bd%e5%91%a8%e6%9c%9f%e7%a0%94%e7%a9%b6","status":"publish","type":"post","link":"https:\/\/92it.top\/?p=5602","title":{"rendered":"SwiftUI \u89c6\u56fe\u7684\u751f\u547d\u5468\u671f\u7814\u7a76"},"content":{"rendered":"\n<p>\u5728 UIKit\uff08AppKit\uff09\u7684\u4e16\u754c\u4e2d\uff0c\u901a\u8fc7\u6846\u67b6\u63d0\u4f9b\u7684\u5927\u91cf\u94a9\u5b50\uff08\u4f8b\u5982 viewDidLoad\u3001viewWillLayoutSubviews \u7b49\uff09\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u5c06\u81ea\u5df1\u7684\u610f\u5fd7\u6ce8\u5165\u89c6\u56fe\u63a7\u5236\u5668\u751f\u547d\u5468\u671f\u7684\u5404\u4e2a\u8282\u70b9\u4e4b\u4e2d\uff0c\u5b9b\u5982\u795e\u660e\u3002\u5728 SwiftUI \u4e2d\uff0c\u7cfb\u7edf\u6536\u56de\u4e86\u4e0a\u8ff0\u7684\u6743\u5229\uff0c\u5f00\u53d1\u8005\u57fa\u672c\u4e27\u5931\u4e86\u5bf9\u89c6\u56fe\u751f\u547d\u5468\u671f\u7684\u638c\u63a7\u3002\u4e0d\u5c11 SwiftUI \u5f00\u53d1\u8005\u90fd\u78b0\u5230\u8fc7\u89c6\u56fe\u751f\u547d\u5468\u671f\u7684\u884c\u4e3a\u8d85\u51fa\u9884\u671f\u7684\u72b6\u51b5\uff08\u4f8b\u5982\u89c6\u56fe\u591a\u6b21\u6784\u9020\u3001onAppear \u65e0\u4ece\u63a7\u5236\u7b49\uff09\u3002<\/p>\n\n\n\n<p>\u672c\u6587\u5c06\u4f5c\u8005\u5bf9 SwiftUI \u89c6\u56fe\u3001SwiftUI \u89c6\u56fe\u751f\u547d\u5468\u671f\u7684\u7406\u89e3\u548c\u7814\u7a76\u505a\u4ee5\u4ecb\u7ecd\uff0c\u4f9b\u5927\u5bb6\u4e00\u8d77\u63a2\u8ba8\u3002<\/p>\n\n\n\n<p>\u5728\u8fdb\u884c\u66f4\u8be6\u5c3d\u8bf4\u660e\u4e4b\u524d\uff0c\u8bf7\u5927\u5bb6\u5148\u660e\u786e\u4e24\u4e2a\u89c2\u70b9\uff1a<\/p>\n\n\n\n<ul><li>SwiftUI \u6ca1\u6709\u540c UIkit\uff08AppKit\uff09\u5bf9\u5e94\u7684\u89c6\u56fe\u4e0e\u89c6\u56fe\u751f\u547d\u5468\u671f<\/li><li>\u5e94\u907f\u514d\u5bf9 SwiftUI \u89c6\u56fe\u7684\u521b\u5efa\u3001body \u7684\u8c03\u7528\u3001\u5e03\u5c40\u4e0e\u6e32\u67d3\u7b49\u7684\u65f6\u673a\u548c\u9891\u7387\u8fdb\u884c\u5047\u8bbe<\/li><\/ul>\n\n\n\n<h6 class=\"wp-block-heading\">SwiftUI \u7684\u89c6\u56fe<\/h6>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>\u5728 SwiftUI \u4e2d\uff0c\u89c6\u56fe\u5b9a\u4e49\u4e86\u4e00\u5757\u7528\u6237\u754c\u9762\uff0c\u5e76\u4ee5\u89c6\u56fe\u6811\u7684\u5f62\u5f0f\u7ec4\u7ec7\u5728\u4e00\u8d77\uff0cSwiftUI \u901a\u8fc7\u89e3\u6790\u89c6\u56fe\u6811\u6765\u521b\u5efa\u5408\u9002\u7684\u6e32\u67d3\u3002<\/p>\n\n\n\n<p>\u5728 SwiftUI \u5185\u90e8\u5b83\u4f1a\u81f3\u5c11\u521b\u5efa\u4e24\u79cd\u7c7b\u578b\u7684\u6811\u2014\u2014\u7c7b\u578b\u6811\u3001\u89c6\u56fe\u503c\u6811<\/p>\n\n\n\n<p id=\"\u7c7b\u578b\u6811\"><strong>\u7c7b\u578b\u6811<\/strong><\/p>\n\n\n\n<p>\u5f00\u53d1\u8005\u901a\u8fc7\u521b\u5efa\u7b26\u5408 View \u534f\u8bae\u7684\u7ed3\u6784\u4f53\u5b9a\u4e49\u60f3\u8981\u5448\u73b0\u7684\u7528\u6237\u754c\u9762\uff0c\u7ed3\u6784\u4f53\u7684 body \u5c5e\u6027\u662f\u4e00\u4e2a\u5e26\u6709\u4f17\u591a\u6cdb\u578b\u53c2\u6570\u7684\u5e9e\u5927\u7c7b\u578b\uff0cSwiftUI \u4f1a\u5c06\u8fd9\u4e9b\u7c7b\u578b\u7ec4\u7ec7\u6210\u4e00\u68f5\u7c7b\u578b\u6811\u3002\u5b83\u5305\u542b\u4e86 app \u751f\u547d\u5468\u671f\u4e2d\u53ef\u80fd\u4f1a\u51fa\u73b0\u5728\u5c4f\u5e55\u4e0a\u7684\u6240\u6709\u7b26\u5408 View \u534f\u8bae\u7684\u7c7b\u578b\uff08\u5373\u4f7f\u53ef\u80fd\u6c38\u8fdc\u4e0d\u4f1a\u88ab\u6e32\u67d3\uff09\u3002<\/p>\n\n\n\n<p>\u4f8b\u5982\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">struct ContentView:View{\n    var body: some View{\n        Group {\n            if true {\n                Text(\"hello world\")\n            }\n            else {\n                Text(\"Won't be rendered\")\n            }\n        }\n    }\n}<\/pre>\n\n\n\n<p>\u4e0a\u9762\u7684\u4ee3\u7801\u5c06\u6784\u5efa\u6210\u5982\u4e0b\u7684\u7c7b\u578b\u6811\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">Group&lt;_ConditionalContent&lt;Text, Text>><\/pre>\n\n\n\n<p>\u5373\u4f7f<code>Text(\"Won't be rendered\")<\/code>\u6c38\u8fdc\u90fd\u4e0d\u4f1a\u88ab\u663e\u793a\uff0c\u5b83\u4ecd\u7136\u88ab\u5305\u542b\u5728\u7c7b\u578b\u6811\u4e2d\u3002<\/p>\n\n\n\n<p>\u7c7b\u578b\u6811\u5728\u7f16\u8bd1\u540e\u5c31\u5df2\u7ecf\u56fa\u5b9a\uff0c\u5728 app \u7684\u751f\u547d\u5468\u671f\u5185\u90fd\u4e0d\u4f1a\u53d1\u751f\u53d8\u5316\u3002<\/p>\n\n\n\n<p><strong>\u89c6\u56fe\u503c\u6811<\/strong><\/p>\n\n\n\n<p>\u5728 SwiftUI \u4e2d\uff0c<a href=\"https:\/\/developer.apple.com\/videos\/play\/wwdc2019\/226\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u89c6\u56fe\u662f\u72b6\u6001\u7684\u51fd\u6570<\/a>\u3002<\/p>\n\n\n\n<p>\u5f00\u53d1\u8005\u901a\u8fc7\u7b26\u5408 View \u534f\u8bae\u7684\u7ed3\u6784\u4f53\u6765\u58f0\u660e\u754c\u9762\uff0cSwiftUI \u901a\u8fc7\u8c03\u7528\u7ed3\u6784\u4f53\u5b9e\u4f8b\u7684 body \u83b7\u53d6\u5bf9\u5e94\u7684\u89c6\u56fe\u503c\u3002body \u5219\u6839\u636e\u7528\u6237\u7684\u754c\u9762\u63cf\u8ff0\u548c\u5bf9\u5e94\u7684\u4f9d\u8d56\uff08Source of truth\uff09\u8ba1\u7b97\u7ed3\u679c\u3002<\/p>\n\n\n\n<p>\u5728 app \u8fd0\u884c\u540e\u8fdb\u884c\u7b2c\u4e00\u6b21\u6e32\u67d3\u65f6\uff0cSwiftUI \u5c06\u4f9d\u636e\u7c7b\u578b\u6811\u6309\u56fe\u7d22\u9aa5\uff0c\u521b\u5efa\u7c7b\u578b\u5b9e\u4f8b\uff0c\u5b9e\u4f8b\u7684 body \u6839\u636e\u521d\u59cb\u72b6\u6001\u8ba1\u7b97\u89c6\u56fe\u503c\uff0c\u5e76\u7ec4\u7ec7\u6210\u89c6\u56fe\u503c\u6811\u3002\u9700\u8981\u521b\u5efa\u54ea\u4e9b\u5b9e\u4f8b\uff0c\u5219\u662f\u6839\u636e\u5f53\u65f6\u7684\u72b6\u6001\u51b3\u5b9a\u7684\uff0c\u6bcf\u6b21\u7684\u72b6\u6001\u53d8\u5316\u90fd\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6700\u7ec8\u751f\u6210\u7684\u89c6\u56fe\u503c\u6811\u4e0d\u540c\uff08\u53ef\u80fd\u4ec5\u662f\u67d0\u4e2a\u8282\u70b9\u7684\u89c6\u56fe\u503c\u53d1\u751f\u53d8\u5316\uff0c\u4e5f\u53ef\u80fd\u662f\u89c6\u56fe\u503c\u6811\u7684\u7ed3\u6784\u90fd\u53d1\u751f\u4e86\u5de8\u5927\u7684\u53d8\u5316\uff09\u3002<\/p>\n\n\n\n<p>\u5f53 State \u53d1\u751f\u53d8\u5316\u540e\uff0cSwiftUI \u4f1a\u751f\u6210\u4e00\u68f5\u65b0\u7684\u89c6\u56fe\u503c\u6811\uff08Source of truth \u6ca1\u6709\u53d1\u751f\u53d8\u5316\u7684\u8282\u70b9\uff0c\u4e0d\u4f1a\u91cd\u65b0\u8ba1\u7b97\uff0c\u76f4\u63a5\u4f7f\u7528\u65e7\u503c\uff09\uff0c\u5e76\u540c\u8001\u7684\u89c6\u56fe\u503c\u6811\u8fdb\u884c\u6bd4\u5bf9\uff0cSwiftUI \u5c06\u5bf9\u5176\u4e2d\u6709\u53d8\u5316\u7684\u90e8\u5206\u91cd\u65b0\u5e03\u5c40\u6e32\u67d3\uff0c\u5e76\u7528\u65b0\u751f\u6210\u7684\u89c6\u56fe\u503c\u6811\u53d6\u4ee3\u8001\u7684\u89c6\u56fe\u503c\u6811\u3002<\/p>\n\n\n\n<p>\u89c6\u56fe\u503c\u6811\u901a\u5e38\u53ea\u4fdd\u5b58\u5f53\u524d\u5e03\u5c40\u3001\u6e32\u67d3\u6240\u9700\u7684\u5185\u5bb9\uff08\u4e2a\u522b\u60c5\u51b5\u4e0b\uff0c\u4f1a\u7f13\u5b58\u5c11\u6570\u4e0d\u53c2\u4e0e\u5e03\u5c40\u3001\u6e32\u67d3\u7684\u89c6\u56fe\u503c\uff09\uff0c\u5728 app \u7684\u751f\u547d\u5468\u671f\u4e2d\uff0c\u968f\u7740 State \u7684\u53d8\u5316\u800c\u4e0d\u65ad\u5730\u53d8\u5316\u3002<\/p>\n\n\n\n<p><strong>\u4ec0\u4e48\u662f\u89c6\u56fe<\/strong><\/p>\n\n\n\n<p>\u5f00\u53d1\u8005\u66f4\u4e60\u60ef\u5c06\u7b26\u5408 View \u534f\u8bae\u7684\u7ed3\u6784\u4f53\u6216\u7ed3\u6784\u4f53\u5b9e\u4f8b\u89c6\u4f5c\u89c6\u56fe\uff0c\u800c\u5728 SwiftUI \u7684\u89d2\u5ea6\uff0c\u89c6\u56fe\u503c\u6811\u4e0a\u7684\u8282\u70b9\u5185\u5bb9\uff0c\u624d\u662f\u5b83\u6240\u8ba4\u4e3a\u7684\u89c6\u56fe\u3002<\/p>\n\n\n\n<h6 class=\"wp-block-heading\">SwiftUI \u89c6\u56fe\u7684\u751f\u547d\u5468\u671f<\/h6>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>\u5927\u591a\u4ecb\u7ecd SwiftUI \u89c6\u56fe\u751f\u547d\u5468\u671f\u7684\u6587\u7ae0\uff0c\u901a\u5e38\u4f1a\u5c06\u89c6\u56fe\u7684\u751f\u547d\u5468\u671f\u63cf\u8ff0\u6210\u5982\u4e0b\u7684\u94fe\u6761\uff1a<\/p>\n\n\n\n<p>\u521d\u59cb\u5316\u89c6\u56fe\u5b9e\u4f8b\u2014\u2014\u6ce8\u518c\u6570\u636e\u4f9d\u8d56\u2014\u2014\u8c03\u7528 body \u8ba1\u7b97\u7ed3\u679c\u2014\u2014onAppear\u2014\u2014\u9500\u6bc1\u5b9e\u4f8b\u2014\u2014onDisapper<\/p>\n\n\n\n<p>\u6709\u4e86\u4e0a\u9762\u7684\u5173\u4e8e\u89c6\u56fe\u7684\u5b9a\u4e49\uff0c\u6211\u4eec\u518d\u770b\u8fd9\u79cd\u5173\u4e8e\u751f\u547d\u5468\u671f\u7684\u63cf\u8ff0\u4fbf\u4f1a\u53d1\u73b0\u5176\u4e2d\u7684\u95ee\u9898\u2014\u2014\u5c06\u4e24\u79cd\u89c6\u56fe\u7c7b\u578b\u89c6\u4e3a\u4e00\u4f53\uff0c\u5c06\u4e0d\u540c\u7c7b\u578b\u7684\u89c6\u56fe\u7684\u751f\u547d\u5468\u671f\u5f3a\u884c\u6df7\u7f16\u5230\u4e00\u6761\u903b\u8f91\u7ebf\u4e0a\u3002<\/p>\n\n\n\n<p>\u5728 WWDC 2020 \u7684 <a href=\"https:\/\/www.fatbobman.com\/posts\/swiftUILifeCycle\/Data Essentials in SwiftUI\">Data Essentials in SwiftUI<\/a> \u4e13\u9898\u4e2d\uff0c\u82f9\u679c\u7279\u522b\u6307\u51fa\uff1a<strong>\u89c6\u56fe\u7684\u751f\u547d\u7684\u5468\u671f\u4e0e\u5b9a\u4e49\u5b83\u7684\u7ed3\u6784\u7684\u751f\u547d\u5468\u671f\u662f\u5206\u5f00\u7684<\/strong>\u3002<\/p>\n\n\n\n<p>\u56e0\u6b64\uff0c\u6211\u4eec\u9700\u8981\u5c06\u5f00\u53d1\u8005\u773c\u4e2d\u7684\u89c6\u56fe\u548c SwiftUI \u773c\u4e2d\u7684\u89c6\u56fe\u5206\u522b\u5bf9\u5f85\uff0c\u5404\u81ea\u72ec\u7acb\u7684\u5206\u6790\u5176\u751f\u547d\u5468\u671f\u3002<\/p>\n\n\n\n<p><strong>\u7b26\u5408 View \u534f\u8bae\u7684\u7ed3\u6784\u4f53\u5b9e\u4f8b\u7684\u751f\u547d\u5468\u671f<\/strong><\/p>\n\n\n\n<p><strong>\u521d\u59cb\u5316<\/strong><\/p>\n\n\n\n<p>\u901a\u8fc7\u5728\u7ed3\u6784\u4f53\u7684\u6784\u9020\u51fd\u6570\u4e2d\u6dfb\u52a0\u6253\u5370\u547d\u4ee4\uff0c\u6211\u4eec\u5f88\u5bb9\u6613\u5c31\u53ef\u4ee5\u83b7\u77e5 SwiftUI \u521b\u5efa\u4e86\u67d0\u4e2a\u7ed3\u6784\u4f53\u7684\u5b9e\u4f8b\u3002\u5982\u679c\u4f60\u4ed4\u7ec6\u5206\u6790\u6784\u9020\u51fd\u6570\u7684\u6253\u5370\u7ed3\u679c\uff0c\u4f60\u4f1a\u53d1\u73b0\u521b\u5efa\u7ed3\u6784\u4f53\u5b9e\u4f8b\u7684\u65f6\u673a\u548c\u9891\u7387\u8fdc\u8d85\u4f60\u7684\u9884\u671f\u3002<\/p>\n\n\n\n<p>\u60f3\u8981\u83b7\u53d6 body \u503c\u4e00\u5b9a\u8981\u9996\u5148\u521b\u5efa\u5b9e\u4f8b\uff0c\u4f46\u521b\u5efa\u5b9e\u4f8b\u5e76\u975e\u4e00\u5b9a\u6709\u83b7\u53d6 body \u503c\u7684\u5fc5\u8981\uff01<\/p>\n\n\n\n<ul><li>\u5728 SwiftUI \u751f\u6210\u89c6\u56fe\u503c\u6811\u65f6\uff0c\u5f53\u53d1\u73b0\u6ca1\u6709\u5bf9\u5e94\u7684\u5b9e\u4f8b\u65f6\uff0cSwiftUI \u4f1a\u521b\u5efa\u4e00\u4e2a\u5b9e\u4f8b\u4ece\u800c\u83b7\u53d6\u5b83\u7684 body \u7ed3\u679c\u3002<\/li><li>\u5728\u751f\u6210\u65b0\u7684\u89c6\u56fe\u503c\u6811\u65f6\uff0c\u5373\u4f7f\u5df2\u7ecf\u6709\u53ef\u4ee5\u5bf9\u5e94\u7684\u5b9e\u4f8b\uff08\u8be5\u5b9e\u4f8b\u5e76\u672a\u9500\u6bc1\uff09\uff0cSwiftUI \u4ecd\u53ef\u80fd\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5b9e\u4f8b\u3002\u4f46 SwiftUI \u5e76\u975e\u4e00\u5b9a\u4f1a\u4ece\u65b0\u7684\u5b9e\u4f8b\u4e2d\u83b7\u53d6 body \u7ed3\u679c\uff0c\u5982\u679c\u4e4b\u524d\u7684\u5b9e\u4f8b\u6ce8\u518c\u8fc7\u6570\u636e\u4f9d\u8d56\uff0c\u89c6\u56fe\u503c\u6811\u4ecd\u53ef\u80fd\u4f1a\u4ece\u539f\u6765\u7684\u5b9e\u4f8b\u7684 body \u4e2d\u83b7\u53d6\u7ed3\u679c\u3002<\/li><li>\u5728 NavigationView \u4e2d\uff0c\u5982\u679c\u5728 NavigationLink \u4e2d\u4f7f\u7528\u4e86\u9759\u6001\u7684\u76ee\u6807\u89c6\u56fe\uff0cSwiftUI \u5c06\u4f1a\u4e3a\u6240\u6709\u7684\u76ee\u6807\u89c6\u56fe\u521b\u5efa\u5b9e\u4f8b\uff0c\u65e0\u8bba\u662f\u5426\u8bbf\u95ee\u3002<\/li><li>\u5728 TabView \u4e2d\uff0cSwiftUI \u5728\u4e00\u5f00\u59cb\u5c31\u4e3a\u6240\u6709 tab \u5bf9\u5e94\u7684\u89c6\u56fe\u521b\u5efa\u4e86\u5b9e\u4f8b\u3002<\/li><\/ul>\n\n\n\n<p>\u7c7b\u4f3c\u4e0a\u9762\u7684\u60c5\u51b5\u8fd8\u6709\u4e0d\u5c11\u3002\u8fd9\u4e5f\u5c31\u5f88\u597d\u7684\u89e3\u91ca\u4e86\uff0c\u5f88\u591a\u5f00\u53d1\u8005\u90fd\u4f1a\u78b0\u5230\u67d0\u4e9b\u89c6\u56fe\u83ab\u540d\u591a\u6b21\u521d\u59cb\u5316\u7684\u60c5\u51b5\u3002\u8fd9\u79cd\u60c5\u51b5\u53ef\u80fd\u662f SwiftUI \u5c06\u7b2c\u4e00\u4e2a\u5b9e\u4f8b\u9500\u6bc1\u540e\u521b\u5efa\u4e86\u4e00\u4e2a\u65b0\u7684\u5b9e\u4f8b\uff0c\u4e5f\u53ef\u80fd\u662f\u6ca1\u6709\u9500\u6bc1\u7b2c\u4e00\u4e2a\u5b9e\u4f8b\u800c\u76f4\u63a5\u521b\u5efa\u4e86\u4e00\u4e2a\u65b0\u7684\u5b9e\u4f8b\u3002<\/p>\n\n\n\n<p>\u603b\u4e4b\uff0cSwiftUI \u5c06\u6839\u636e\u5b83\u81ea\u8eab\u7684\u9700\u8981\uff0c\u53ef\u80fd\u5728\u4efb\u610f\u7684\u65f6\u95f4\u3001\u521b\u5efa\u4efb\u610f\u6570\u91cf\u7684\u5b9e\u4f8b\u3002\u5f00\u53d1\u8005\u4e3a\u4e86\u9002\u5e94 SwiftUI \u7684\u8fd9\u79cd\u7279\u6027\uff0c\u552f\u4e00\u53ef\u4ee5\u505a\u7684\u5c31\u662f\u8ba9\u7ed3\u6784\u4f53\u7684\u6784\u9020\u51fd\u6570\u5c3d\u53ef\u80fd\u7684\u7b80\u5355\u3002\u9664\u4e86\u5fc5\u8981\u7684\u53c2\u6570\u8bbe\u7f6e\u5916\uff0c\u4e0d\u8981\u505a\u4efb\u4f55\u591a\u4f59\u7684\u64cd\u4f5c\u3002\u8fd9\u6837\u5373\u4f7f SwiftUI \u521b\u5efa\u4e86\u591a\u4f59\u7684\u5b9e\u4f8b\uff0c\u4e5f\u4e0d\u4f1a\u52a0\u5927\u7cfb\u7edf\u7684\u8d1f\u62c5\u3002<\/p>\n\n\n\n<p><strong>\u6ce8\u518c\u6570\u636e\u4f9d\u8d56<\/strong><\/p>\n\n\n\n<p>\u5728 SwiftUI \u4e2d\uff0c\u72b6\u6001\uff08\u6216\u8005\u8bf4\u662f\u6570\u636e\uff09\u662f\u9a71\u52a8 UI \u7684\u52a8\u529b\u3002\u4e3a\u4e86\u8ba9\u89c6\u56fe\u80fd\u591f\u53cd\u6620\u72b6\u6001\u7684\u53d8\u5316\uff0c\u89c6\u56fe\u9700\u8981\u6ce8\u518c\u548c\u5176\u5bf9\u5e94\u7684\u4f9d\u8d56\u9879\u3002\u5c3d\u7ba1\u5728\u7ed3\u6784\u4f53\u7684\u6784\u9020\u51fd\u6570\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u7279\u5b9a\u7684\u5c5e\u6027\u5305\u88c5\u5668\uff08\u4f8b\u5982@State\u3001@StateObject \u7b49\uff09\u58f0\u660e\u4f9d\u8d56\u9879\uff0c\u4f46\u6211\u5e76\u4e0d\u8ba4\u4e3a\u6ce8\u518c\u6570\u636e\u4f9d\u8d56\u7684\u5de5\u4f5c\u662f\u5728\u521d\u59cb\u5316\u9636\u6bb5\u8fdb\u884c\u7684\u3002\u4e3b\u8981\u7684\u7406\u7531\u6709\u4e09\u6761\uff1a<\/p>\n\n\n\n<ul><li>\u6ce8\u518c\u4f9d\u8d56\u7684\u8d1f\u62c5\u5e76\u4e0d\u5c0f\u3002\u6bd4\u5982\uff0c@ObservableObject \u5728\u6bcf\u6b21\u521b\u5efa\u4f9d\u8d56\u7684\u65f6\u5019\u90fd\u9700\u8981\u91cd\u65b0\u8fdb\u884c\u5806\u5206\u914d\uff0c\u6d88\u8017\u5f88\u5927\uff0c\u5e76\u53ef\u80fd\u6709\u4f1a\u6709\u4e22\u5931\u6570\u636e\u7684\u98ce\u9669\u3002\u5982\u679c\u5728\u6784\u9020\u65b9\u6cd5\u4e2d\u8fdb\u884c\u6ce8\u518c\u4f9d\u8d56\u7684\u5de5\u4f5c\uff0c\u5c06\u4e0d\u7b26\u5408\u521b\u5efa\u8f7b\u91cf\u5316\u6784\u9020\u65b9\u6cd5\u7684\u51c6\u5219\u3002<\/li><li>\u9664\u4e86\u4f7f\u7528\u5c5e\u6027\u5305\u88c5\u5668\u5916\uff0cSwiftUI \u8fd8\u4e3a\u89c6\u56fe\u8fd8\u63d0\u4f9b\u4e86 onReceive\u3001onChange\u3001onOpenURL\u3001onContinueUserActivity \u7b49\u65b9\u5f0f\u8fdb\u884c\u4f9d\u8d56\u6ce8\u518c\u3002\u4ee5\u4e0a\u56db\u79cd\u65b9\u5f0f\u5fc5\u987b\u5bf9 body \u4e2d\u7684\u5185\u5bb9\u8fdb\u884c\u89e3\u6790\u540e\u624d\u80fd\u5b8c\u6210\u3002<\/li><li>\u4e0b\u6587\u4e2d\u4f1a\u63d0\u5230\uff0c\u5728\u89c6\u56fe\u503c\u6811\u7684\u89c6\u56fe\u751f\u547d\u5468\u671f\u5185\uff0c\u65e0\u8bba\u521b\u5efa\u591a\u5c11\u4e2a\u5b9e\u4f8b\u90fd\u53ea\u4f1a\u4fdd\u7559\u4e00\u4efd\u4f9d\u8d56\u9879\u526f\u672c\u3002\u5f53\u4f7f\u7528\u65b0\u5b9e\u4f8b\u65f6\uff0cSwiftUI \u4ecd\u4f1a\u5c06\u65b0\u7684\u5b9e\u4f8b\u540c\u539f\u6709\u7684\u4f9d\u8d56\u9879\u5173\u8054\u8d77\u6765\u3002<\/li><\/ul>\n\n\n\n<p>\u9274\u4e8e\u4ee5\u4e0a\u539f\u56e0\uff0c\u6ce8\u518c\u89c6\u56fe\u4f9d\u8d56\u9879\u7684\u65f6\u673a\u5e94\u8be5\u5728\u521d\u59cb\u5316\u540e\uff0c\u83b7\u5f97 body \u7ed3\u679c\u4e4b\u524d\u3002<\/p>\n\n\n\n<p><strong>\u8c03\u7528 body \u8ba1\u7b97\u7ed3\u679c<\/strong><\/p>\n\n\n\n<p>\u901a\u8fc7\u5728 body \u4e2d\u6dfb\u52a0\u7c7b\u4f3c\u5982\u4e0b\u7684\u4ee3\u7801\uff0c\u6211\u4eec\u53ef\u4ee5\u5728 SwiftUI \u8c03\u7528\u5b9e\u4f8b\u7684 body \u65f6\u83b7\u5f97\u901a\u77e5\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">let _ = print(\"update some view\")<\/pre>\n\n\n\n<p>\u8ba1\u7b97 body \u503c\u662f\u5728\u4e3b\u7ebf\u7a0b\u4e0a\u8fdb\u884c\u7684\uff0c\u5e76\u4e14 SwiftUI \u5fc5\u987b\u5728\u4e00\u4e2a\u6e32\u67d3\u5468\u671f\u5185\u5b8c\u6210\u6240\u6709\u7684\u8ba1\u7b97\u3001\u6bd4\u8f83\u3001\u5e03\u5c40\u7b49\u5de5\u4f5c\u3002\u4e3a\u4e86\u907f\u514d\u9020\u6210 UI \u5361\u987f\uff0cbody \u5e94\u8bbe\u8ba1\u6210\u7eaf\u51fd\u6570\uff0c\u53ea\u5728\u5176\u4e2d\u521b\u5efa\u7b80\u5355\u7684\u89c6\u56fe\u63cf\u8ff0\uff0c\u5c06\u590d\u6742\u7684\u903b\u8f91\u8fd0\u7b97\u548c\u526f\u4f5c\u7528\u4ea4\u7ed9\u5176\u4ed6\u7684\u7ebf\u7a0b\u6765\u8fdb\u884c\uff08\u6bd4\u5982\u5728 Store \u4e2d\u5c06\u903b\u8f91\u8c03\u5ea6\u5230\u5176\u4ed6\u7ebf\u7a0b\u6216\u5728\u89c6\u56fe\u4e2d\u4f7f\u7528 task \u5c06\u4efb\u52a1\u6d3e\u9063\u5230\u5176\u4ed6\u7ebf\u7a0b\uff09\u3002<\/p>\n\n\n\n<p><strong>\u9500\u6bc1<\/strong><\/p>\n\n\n\n<p>\u7ed3\u6784\u4f53\u5e76\u4e0d\u63d0\u4f9b\u6790\u6784\u65b9\u6cd5\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u7c7b\u4f3c\u4e0b\u9762\u7684\u4ee3\u7801\u89c2\u5bdf\u7ed3\u6784\u4f53\u5b9e\u4f8b\u5927\u81f4\u7684\u9500\u6bc1\u65f6\u673a\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class LifeMonitor {\n    let name: String\n    init(name: String) {\n        self.name = name\n        print(\"\\(name) init\")\n    }\n\n    deinit {\n        print(\"\\(name) deinit\")\n    }\n}\n\nstruct TestView:View {\n    let lifeMonitor:LifeMonitor\n    init(){\n        self.lifeMonitor = LifeMonitor(name:\"testView\")\n    }\n}<\/pre>\n\n\n\n<p>\u901a\u8fc7\u89c2\u5bdf\uff0c\u6211\u4eec\u53ef\u4ee5\u53d1\u73b0 SwiftUI \u5728\u5904\u7406\u7ed3\u6784\u4f53\u5b9e\u4f8b\u7684\u9500\u6bc1\u4e0a\u4e5f\u5e76\u6ca1\u7edf\u4e00\u7684\u89c4\u5f8b\u3002<\/p>\n\n\n\n<p>\u6bd4\u5982\u7c7b\u4f3c\u5982\u4e0b\u7684\u4ee3\u7801\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">ZStack {\n    ShowMessage(text: \"1\")\n        .opacity(selection == 1 ? 1 : 0)\n    ShowMessage(text: \"2\")\n        .opacity(selection == 2 ? 1 : 0)\n}\n\nstruct ShowMessage:View{\n    let text:String\n    let lifeMonitor:LifeMonitor\n    init(text:String){\n        self.text = text\n        self.lifeMonitor = LifeMonitor(name: text)\n    }\n\n    var body: some View{\n        Text(text)\n    }\n}<\/pre>\n\n\n\n<p>\u6bcf\u6b21\u5f53 selection \u5728 1 \u548c 2 \u4e4b\u95f4\u5207\u6362\u65f6\uff0cSwiftUI \u90fd\u4f1a\u91cd\u65b0\u521b\u5efa\u4e24\u4e2a\u65b0\u7684\u5b9e\u4f8b\uff0c\u5e76\u4e14\u5c06\u65e7\u7684\u5b9e\u4f8b\u9500\u6bc1\u3002<\/p>\n\n\n\n<p>\u800c\u5982\u4e0b\u7684\u4ee3\u7801\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">TabView(selection: $selection) {\n    ShowMessage(text: \"1\")\n        .tag(1)\n    ShowMessage(text: \"2\")\n        .tag(2)\n}\n<\/pre>\n\n\n\n<p>SwiftUI \u5c06\u53ea\u5728\u6700\u521d\u521b\u5efa\u4e24\u4e2a ShowMessage \u7684\u5b9e\u4f8b\uff0c\u65e0\u8bba\u5982\u4f55\u5207\u6362 selection\uff0cTabView \u5c06\u5168\u7a0b\u53ea\u4f7f\u7528\u8fd9\u4e24\u4e2a\u5b9e\u4f8b\u3002<\/p>\n\n\n\n<p>SwiftUI \u53ef\u80fd\u968f\u65f6\u9500\u6bc1\u5b9e\u4f8b\uff0c\u5e76\u521b\u5efa\u65b0\u7684\u5b9e\u4f8b\uff0c\u4e5f\u53ef\u80fd\u5c06\u5b9e\u4f8b\u4fdd\u7559\u8f83\u957f\u7684\u65f6\u95f4\u3002\u603b\u4e4b\uff0c\u5e94\u907f\u514d\u5bf9\u5b9e\u4f8b\u7684\u521b\u5efa\u3001\u9500\u6bc1\u7684\u65f6\u673a\u548c\u9891\u7387\u8fdb\u884c\u5047\u8bbe\u3002<\/p>\n\n\n\n<h6 class=\"wp-block-heading\">\u89c6\u56fe\u503c\u6811\u4e2d\u7684\u89c6\u56fe\u7684\u751f\u547d\u5468\u671f<\/h6>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p id=\"\u5b58\u6d3b\u65f6\u95f4\"><strong>\u5b58\u6d3b\u65f6\u95f4<\/strong><\/p>\n\n\n\n<p>\u540c\u7b26\u5408 View \u534f\u8bae\u7684\u7ed3\u6784\u4f53\u5b9e\u4f8b\u7684\u5b58\u6d3b\u65f6\u95f4\u5b8c\u5168\u4e0d\u786e\u5b9a\u76f8\u6bd4\uff0c\u89c6\u56fe\u503c\u6811\u4e2d\u7684\u89c6\u56fe\u7684\u751f\u547d\u5468\u671f\u5219\u662f\u5bb9\u6613\u5224\u65ad\u7684\u591a\u3002<\/p>\n\n\n\n<p>\u6bcf\u4e2a\u89c6\u56fe\u503c\u90fd\u6709\u5bf9\u5e94\u7684\u6807\u8bc6\u7b26\uff0c\u89c6\u56fe\u503c\u548c\u6807\u8bc6\u7b26\u7ed3\u5408\u5728\u4e00\u8d77\u4ee3\u8868\u5c4f\u5e55\u4e0a\u7684\u67d0\u4e00\u5757\u89c6\u56fe\u3002 \u5728 Source of trueh \u53d1\u751f\u53d8\u5316\u540e\uff0c\u89c6\u56fe\u503c\u4e5f\u4f1a\u968f\u4e4b\u53d1\u751f\u53d8\u5316\uff0c\u4f46\u7531\u4e8e\u6807\u8bc6\u7b26\u4e0d\u53d8\uff0c\u5219\u8be5\u89c6\u56fe\u5c06\u4ecd\u7136\u5b58\u5728\u3002<\/p>\n\n\n\n<p>\u901a\u5e38\u60c5\u51b5\u4e0b\uff0cSwiftUI \u5728\u9700\u8981\u6e32\u67d3\u5c4f\u5e55\u67d0\u4e2a\u533a\u57df\u6216\u9700\u8981\u8be5\u533a\u57df\u7684\u6570\u636e\u914d\u5408\u5e03\u5c40\u65f6\uff0c\u4f1a\u5728\u89c6\u56fe\u503c\u6811\u4e0a\u521b\u5efa\u5bf9\u5e94\u7684\u89c6\u56fe\u3002\u5f53\u4e0d\u518d\u9700\u8981\u5176\u53c2\u4e0e\u5e03\u5c40\u6216\u6e32\u67d3\u65f6\u89c6\u56fe\u5c06\u88ab\u9500\u6bc1\u3002<\/p>\n\n\n\n<p>\u6781\u4e2a\u522b\u60c5\u51b5\u4e0b\uff0c\u5c3d\u7ba1\u67d0\u4e9b\u89c6\u56fe\u6682\u65f6\u4e0d\u9700\u8981\u53c2\u4e0e\u5e03\u5c40\u4e0e\u6e32\u67d3\uff0c\u4f46 SwiftUI \u51fa\u4e8e\u6548\u7387\u7684\u8003\u91cf\uff0c\u4ecd\u7136\u4f1a\u5c06\u5176\u4fdd\u7559\u5728\u89c6\u56fe\u503c\u6811\u4e0a\u3002\u6bd4\u5982\u5728 List \u548c LazyVStack \u4e2d\uff0cCell \u89c6\u56fe\u5728\u521b\u5efa\u4e4b\u540e\u5373\u4f7f\u6eda\u52a8\u51fa\u5c4f\u5e55\u4e0d\u53c2\u4e0e\u5e03\u5c40\u4e0e\u6e32\u67d3\uff0c\u4f46 SwiftUI \u4ecd\u4f1a\u4fdd\u7559\u8fd9\u4e9b\u89c6\u56fe\u7684\u6570\u636e\uff0c\u76f4\u5230 List \u6216 LazyVStack \u88ab\u9500\u6bc1\u3002<\/p>\n\n\n\n<p>@State \u548c@StateObject\uff0c\u5b83\u4eec\u7684\u751f\u547d\u5468\u671f\u540c\u89c6\u56fe\u7684\u751f\u547d\u5468\u671f\u662f\u4e00\u81f4\u7684\uff0c<strong>\u8fd9\u91cc\u6240\u8bf4\u7684\u89c6\u56fe\uff0c\u4fbf\u662f\u89c6\u56fe\u503c\u6811\u4e2d\u7684\u89c6\u56fe<\/strong>\u3002\u5982\u679c\u611f\u5174\u8da3\uff0c\u53ef\u4ee5\u4f7f\u7528@StateObject \u6765\u7cbe\u786e\u5224\u65ad\u89c6\u56fe\u7684\u751f\u547d\u5468\u671f\u3002<\/p>\n\n\n\n<p><strong>onAppear \u548c onDisappear<\/strong><\/p>\n\n\n\n<p>\u51c6\u786e\u5730\u8bf4\uff0c\u89c6\u56fe\u503c\u6811\u4e2d\u7684\u89c6\u56fe\uff0c\u4f5c\u4e3a\u4e00\u4e2a\u503c\u5728\u5176\u751f\u547d\u5468\u671f\u4e2d\u9664\u4e86\u751f\u6b7b\u5916\uff0c\u5e76\u6ca1\u6709\u5176\u4ed6\u7684\u8282\u70b9\u3002\u4f46 onAppear \u548c onDisappear \u5728\u884c\u4e3a\u8868\u73b0\u4e0a\u53c8\u786e\u5b9e\u4e0e\u5176\u6709\u6240\u5173\u8054\u3002<\/p>\n\n\n\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0conAppear \u548c onDisappear \u4e2d\u95ed\u5305\u7684\u4f5c\u7528\u8303\u56f4\u5e76\u975e\u4e3a\u5176\u5305\u88f9\u7684\u89c6\u56fe\uff0c\u800c\u662f\u5176\u7236\u89c6\u56fe\uff0c\u8fd9\u70b9\u5c24\u4e3a\u91cd\u8981\uff01<\/p>\n\n\n\n<p>SwiftUI \u5b98\u65b9\u6587\u6863\u5bf9 onAppear \u548c onDisappear \u7684\u63cf\u8ff0\u662f\uff1a\u5728\u6b64\u89c6\u56fe\u51fa\u73b0\u65f6\u6267\u884c\u7684\u64cd\u4f5c\uff0c\u5728\u6b64\u89c6\u56fe\u6d88\u5931\u65f6\u8981\u6267\u884c\u7684\u64cd\u4f5c\u3002\u8fd9\u79cd\u63cf\u8ff0\u4e0e\u8fd9\u4e24\u4e2a\u4fee\u9970\u5668\u5728\u5927\u591a\u6570\u573a\u666f\u4e0b\u7684\u884c\u4e3a\u5f88\u63a5\u8fd1\u3002\u56e0\u6b64\uff0c\u5927\u5bb6\u901a\u5e38\u90fd\u4f1a\u5c06\u5176\u89c6\u4f5c UIKit \u4e0b\u7684 viewDidAppear \u548c viewDidDisappear \u7684 SwiftUI \u7248\u672c\uff0c\u8ba4\u4e3a\u5b83\u4eec\u5728\u751f\u547d\u5468\u671f\u4e2d\uff0c\u53ea\u4f1a\u51fa\u73b0\u4e00\u6b21\u3002\u4f46\uff0c\u5982\u679c\u5168\u65b9\u4f4d\u5206\u6790\u5b83\u4eec\u7684\u89e6\u53d1\u65f6\u673a\uff0c\u4fbf\u4f1a\u53d1\u73b0\u5b83\u4eec\u7684\u884c\u4e3a\u4e0e\u63cf\u8ff0\u5e76\u4e0d\u5b8c\u5168\u76f8\u7b26\u3002\u6bd4\u5982\uff0c\u5728\u4e0b\u9762\u7684\u51e0\u4e2a\u573a\u666f\u4e2d\uff0conAppear \u548c onDisappear \u90fd\u5c06\u8fdd\u80cc\u5927\u591a\u6570\u8ba4\u77e5\uff1a<\/p>\n\n\n\n<ul><li>\u5728 ZStack \u4e2d\uff0c\u5373\u4f7f\u89c6\u56fe\u4e0d\u663e\u793a\uff0c\u4e5f\u540c\u6837\u4f1a\u89e6\u53d1 onAppear\uff0c\u5373\u4f7f\u6d88\u5931\uff08\u4e0d\u663e\u793a\uff09\uff0c\u4e5f\u4e0d\u4f1a\u89e6\u53d1 onDisappear\u3002\u89c6\u56fe\u4fdd\u6301\u5b58\u7eed\u72b6\u6001<\/li><\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">ZStack {\n    Text(\"1\")\n        .opacity(selection == 1 ? 1 : 0)\n        .onAppear { print(\"1 appear\") }\n        .onDisappear { print(\"1 disappear\") }\n    Text(\"2\")\n        .opacity(selection == 2 ? 1 : 0)\n        .onAppear { print(\"2 appear\") }\n        .onDisappear { print(\"2 disappear\") }\n}\n\n\/\/ Output\n2 appear\n1 appear<\/pre>\n\n\n\n<ul><li>\u5728 List \u6216 LazyVStack \u4e2d\uff0cCell \u89c6\u56fe\u8fdb\u5165\u5c4f\u5e55\u540e\u89e6\u53d1 onAppear\uff0c\u6eda\u52a8\u51fa\u5c4f\u5e55\u540e\u4f1a\u89e6\u53d1 onDisappear\uff0c\u5728 Cell \u89c6\u56fe\u7684\u5b58\u7eed\u671f\u5185\u53ef\u4ee5\u591a\u6b21\u89e6\u53d1 onAppear \u548c onDisappear<\/li><\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">ScrollView {\n    LazyVStack {\n        ForEach(0..&lt;100) { i in\n            Text(\"\\(i)\")\n                .onAppear { print(\"\\(i) onAppear\") }\n                .onDisappear { print(\"\\(i) onDisappear\") }\n        }\n    }\n}<\/pre>\n\n\n\n<ul><li>\u5728 ScrollView + VStack \u4e2d\uff0c\u5373\u4f7f Cell \u89c6\u56fe\u6ca1\u6709\u663e\u793a\u5728\u5c4f\u5e55\u4e2d\uff0c\u4ecd\u4f1a\u89e6\u53d1 onAppear<\/li><\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">ScrollView {\n    VStack {\n        ForEach(0..&lt;100) { i in\n            Text(\"\\(i)\")\n                .onAppear { print(\"\\(i) onAppear\") }\n                .onDisappear { print(\"\\(i) onDisappear\") }\n        }\n    }\n}\n<\/pre>\n\n\n\n<p>\u7c7b\u4f3c\u7684\u4f8b\u5b50\u8fd8\u6709\u5f88\u591a\uff0c\u6bd4\u5982 TabView\u3001\u6216\u8005\u5c06 frame \u8bbe\u7f6e\u4e3a zero \u7b49\u7b49\u3002<\/p>\n\n\n\n<p>\u7531\u6b64\u53ef\u4ee5\u770b\u51fa\u5728\u89c6\u56fe\u7684\u5b58\u7eed\u671f\u5185\uff0c\u53ef\u4ee5\u591a\u6b21\u89e6\u53d1 onAppear \u548c onDisappear\u3002onAppear \u548c onDisappear \u7684\u89e6\u53d1\u6761\u4ef6\u5e76\u975e\u4ee5\u662f\u5426 appear \u6216\u88ab\u770b\u89c1\u4e3a\u4f9d\u636e\u3002<\/p>\n\n\n\n<p>\u56e0\u6b64\uff0c\u6211\u8ba4\u4e3a\u5e94\u8be5\u4ee5<strong>\u89c6\u56fe\u662f\u5426\u53c2\u4e0e\u6216\u5f71\u54cd\u4e86\u5176\u7236\u89c6\u56fe\u7684\u5e03\u5c40\u4f5c\u4e3a onAppear \u548c onDisappear \u7684\u89e6\u53d1\u6761\u4ef6<\/strong>\u3002\u5982\u679c\u7528\u6b64\u6761\u4ef6\u6765\u89e3\u91ca\u4e0a\u9762\u7684\u60c5\u51b5\u4fbf\u5b8c\u5168\u53ef\u4ee5\u8bf4\u7684\u901a\u4e86\u3002<\/p>\n\n\n\n<ul><li>ZStack \u4e2d\uff0c\u5373\u4f7f\u5c42\u88ab\u9690\u85cf\uff0c\u4f46\u88ab\u9690\u85cf\u5c42\u4e5f\u5fc5\u7136\u4f1a\u5f71\u54cd\u7236\u89c6\u56fe ZStack \u7684\u5e03\u5c40\u89c4\u5212\u3002\u540c\u7406\uff0c\u5c06\u663e\u793a\u5c42\u5207\u6362\u4e3a\u9690\u85cf\u5c42\u540e\uff0c\u8be5\u5c42\u4ecd\u53c2\u4e0e\u5e03\u5c40\uff0c\u56e0\u6b64\uff0cZStack \u7684\u6240\u6709\u5c42\u90fd\u4f1a\u5728\u6700\u5f00\u59cb\u5c31\u89e6\u53d1 onAppear\uff0c\u4f46\u4e0d\u4f1a\u89e6\u53d1 onDisappear\u3002<\/li><li>\u5728 List \u548c LazyVStack \u4e2d\uff0cSwiftUI \u51fa\u4e8e\u6548\u7387\u7684\u8003\u8651\uff0c\u5373\u4f7f Cell \u89c6\u56fe\u79fb\u51fa\u663e\u793a\u8303\u56f4\uff0c\u5b83\u7684\u89c6\u56fe\u4ecd\u5c06\u4fdd\u7559\u5728\u89c6\u56fe\u503c\u6811\u4e0a\uff08\u89c6\u56fe\u4ecd\u5c06\u5b58\u7eed\uff09\u3002\u56e0\u6b64\uff0c\u5f53 Cell \u89c6\u56fe\u51fa\u73b0\u5728\u663e\u793a\u8303\u56f4\u5185\uff08\u5f71\u54cd\u5bb9\u5668\u5e03\u5c40\uff09\u4f1a\u89e6\u53d1 onAppear\uff0c\u79fb\u51fa\u663e\u793a\u8303\u56f4\uff08\u4e0d\u5f71\u54cd\u5bb9\u5668\u5e03\u5c40\uff09\u4f1a\u89e6\u53d1 onDisappar\u3002\u5728\u5176\u5b58\u7eed\u671f\u5185\u53ef\u4ee5\u53cd\u590d\u89e6\u53d1\u3002<\/li><\/ul>\n\n\n\n<p>\u53e6\u5916\uff0c\u7531\u4e8e List \u548c LazyVStack \u7684\u5e03\u5c40\u903b\u8f91\u4e0d\u540c\uff08List \u7684\u5bb9\u5668\u9ad8\u5ea6\u662f\u56fa\u5b9a\u7684\uff0cLazyVStack \u7684\u5bb9\u5668\u9ad8\u5ea6\u662f\u4e0d\u56fa\u5b9a\u7684\uff0c\u5411\u4e0b\u9884\u4f30\u7684\uff09\uff0c\u4e24\u8005\u89e6\u53d1 onDisappear \u7684\u65f6\u673a\u70b9\u4e5f\u4e0d\u540c\u3002List \u662f\u4e0a\u4e0b\u4e24\u4fa7\u90fd\u4f1a\u89e6\u53d1\uff0cLazyVStack \u53ea\u6709\u4e0b\u65b9\u4f1a\u89e6\u53d1\u3002<\/p>\n\n\n\n<ul><li>ScrollView + VStack \u4e2d\uff0c\u5373\u4f7f Cell \u89c6\u56fe\u6ca1\u6709\u51fa\u73b0\u5728\u53ef\u89c1\u533a\u57df\uff0c\u4f46\u5b83\u5728\u6700\u5f00\u59cb\u5c31\u4f1a\u53c2\u4e0e\u5bb9\u5668\u7684\u5e03\u5c40\uff0c\u56e0\u6b64\u4f1a\u5728\u521b\u5efa\u521d\u59cb\u4fbf\u89e6\u53d1 onAppear\uff0c\u4f46\u65e0\u8bba\u5982\u4f55\u6eda\u52a8\uff0c\u6240\u6709\u7684 Cell \u89c6\u56fe\u59cb\u7ec8\u4f1a\u53c2\u4e0e\u5e03\u5c40\uff0c\u56e0\u6b64\u5e76\u4e0d\u4f1a\u89e6\u53d1 onDisappear\u3002<\/li><\/ul>\n\n\n\n<p>\u7236\u89c6\u56fe\u6070\u6070\u662f\u4ee5\u8be5\u89c6\u56fe\u662f\u5426\u5f71\u54cd\u81ea\u8eab\u7684\u5e03\u5c40\u4e3a\u4f9d\u636e\uff0c\u6765\u8c03\u7528 onAppear \u548c onDisappear \u5185\u7684\u95ed\u5305\uff0c\u8fd9\u4e5f\u662f\u4e3a\u4ec0\u4e48\u8fd9\u4e24\u4e2a\u4fee\u9970\u5668\u7684\u4f5c\u7528\u8303\u56f4\u662f\u7236\u89c6\u56fe\u800c\u4e0d\u662f\u89c6\u56fe\u672c\u8eab\u3002<\/p>\n\n\n\n<p id=\"task\"><strong>task<\/strong><\/p>\n\n\n\n<p>task \u6709\u4e24\u79cd\u8868\u73b0\u5f62\u5f0f\uff0c\u4e00\u79cd\u4e0e onAppear \u7c7b\u4f3c\uff0c\u53e6\u4e00\u79cd\u4e0e onAppear + onChange \u7c7b\u4f3c\uff08\u8bf7\u53c2\u9605 <a href=\"https:\/\/www.fatbobman.com\/posts\/onChange\/\">\u4e86\u89e3 SwiftUI \u7684 onChange<\/a>\uff09\u3002<\/p>\n\n\n\n<p>\u540c onAppear \u7c7b\u4f3c\u7684\u7248\u672c\uff0c\u53ef\u4ee5\u5c06\u5176\u89c6\u4e3a onAppear \u7684\u5f02\u6b65\u7248\u672c\u3002\u5982\u679c\u4efb\u52a1\u7684\u6267\u884c\u65f6\u95f4\u8f83\u77ed\uff0c\u4e0b\u9762\u7684\u4ee3\u7801\u4e5f\u53ef\u4ee5\u5b9e\u73b0\u4e00\u6837\u7684\u6548\u679c\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">.onAppear {\n    Task{\n        ....\n    }\n}\n<\/pre>\n\n\n\n<p>\u5f88\u591a\u8d44\u6599\u8ba4\u4e3a task \u4e0e\u89c6\u56fe\u7684\u751f\u547d\u5468\u671f\u76f8\u540c\uff0c\u8fd9\u662f\u4e0d\u51c6\u786e\u7684\u3002\u66f4\u786e\u5207\u7684\u8868\u8ff0\u5e94\u8be5\u662f\uff0c\u5f53\u89c6\u56fe\u9500\u6bc1\u65f6\uff0c\u5c06\u5411 task \u4fee\u9970\u5668\u4e2d\u7684\u95ed\u5305\u53d1\u9001\u4efb\u52a1\u53d6\u6d88\u7684\u4fe1\u53f7\u3002\u81f3\u4e8e\u662f\u5426\u53d6\u6d88\uff0c\u4ecd\u7531 task \u4e2d\u7684\u95ed\u5305\u81ea\u5df1\u51b3\u5b9a\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">struct ContentView: View {\n    @State var show = true\n    var body: some View {\n        VStack {\n            if show {\n                Text(\"Hello, world!\")\n                    .padding()\n                    .task{\n                        var i = 0\n                        while !Task.isCancelled {  \/\/ \u5c1d\u8bd5\u5c06\u672c\u884c\u4ee3\u7801\u6539\u6210 while true {\n                            try? await Task.sleep(nanoseconds: 1_000_000_000)\n                            print(\"task:\",i)\n                            i += 1\n                        }\n                    }\n                    .onAppear{\n                        Task{\n                            var i = 0\n                            while !Task.isCancelled {\n                                try? await Task.sleep(nanoseconds: 1_000_000_000)\n                                print(\"appear:\",i)\n                                i += 1\n                            }\n                        }\n                    }\n\n            }\n            Button(\"show\"){\n                show.toggle()\n            }\n        }\n    }\n}<\/pre>\n\n\n\n<h6 class=\"wp-block-heading\">\u4e24\u79cd\u751f\u547d\u5468\u671f\u4e4b\u95f4\u7684\u5173\u8054<\/h6>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>\u672c\u8282\uff0c\u6211\u4eec\u5c06\u5728\u4e0a\u8ff0\u4e24\u79cd\u751f\u547d\u5468\u671f\u4e4b\u95f4\u5bfb\u627e\u8054\u7cfb\uff0c\u8fdb\u884c\u6c47\u603b\u3002<\/p>\n\n\n\n<p>\u4e3a\u4e86\u65b9\u4fbf\u53d9\u8ff0\uff0c\u4e0b\u6587\u4e2d\u5c06\u3010\u7b26\u5408 View \u534f\u8bae\u7684\u7ed3\u6784\u4f53\u5b9e\u4f8b\u3011\u7b80\u79f0\u4e3a\u3010\u5b9e\u4f8b\u3011\uff0c\u5c06\u3010\u89c6\u56fe\u503c\u6811\u4e2d\u7684\u89c6\u56fe\u3011\u7b80\u79f0\u4e3a\u3010\u89c6\u56fe\u3011\u3002<\/p>\n\n\n\n<ul><li>\u5fc5\u987b\u5148\u521b\u5efa\u5b9e\u4f8b\uff0c\u624d\u80fd\u751f\u6210\u89c6\u56fe<\/li><li>\u521b\u5efa\u7684\u5b9e\u4f8b\u5e76\u975e\u4e00\u5b9a\u4f1a\u7528\u4e8e\u751f\u6210\u89c6\u56fe<\/li><li>\u5728\u89c6\u56fe\u7684\u751f\u547d\u5468\u671f\u4e2d\uff0c\u53ef\u80fd\u521b\u5efa\u591a\u4e2a\u5b9e\u4f8b<\/li><li>\u5728\u89c6\u56fe\u7684\u751f\u547d\u5468\u671f\u4e2d\uff0c\u5b9e\u4f8b\u53ef\u80fd\u968f\u65f6\u88ab\u9500\u6bc1<\/li><li>\u5728\u89c6\u56fe\u7684\u751f\u547d\u5468\u671f\u4e2d\uff0c\u81f3\u5c11\u59cb\u7ec8\u4fdd\u6709\u4e00\u4e2a\u5b9e\u4f8b<\/li><li>\u7b2c\u4e00\u4e2a\u751f\u6210\u89c6\u56fe\u503c\u7684\u5b9e\u4f8b\uff0c\u5c06\u5b8c\u6210\u4f9d\u8d56\u9879\u7684\u5efa\u7acb\u5de5\u4f5c<\/li><li>\u5728\u89c6\u56fe\u7684\u751f\u547d\u5468\u671f\u4e2d\uff0c\u53ea\u6709\u4e00\u4e2a\u4f9d\u8d56\u9879\u526f\u672c<\/li><li>\u5728\u89c6\u56fe\u7684\u751f\u547d\u5468\u671f\u4e2d\uff0c\u65e0\u8bba\u521b\u5efa\u591a\u5c11\u4e2a\u5b9e\u4f8b\uff0c\u540c\u4e00\u65f6\u95f4\u53ea\u6709\u4e00\u4e2a\u5b9e\u4f8b\u53ef\u4ee5\u8fde\u63a5\u5230\u4f9d\u8d56\u9879<\/li><li>\u4f9d\u8d56\u9879\u4e3a\u89c6\u56fe\u7684 Source of truth<\/li><\/ul>\n\n\n\n<h6 class=\"wp-block-heading\">\u4e86\u89e3 SwiftUI \u89c6\u56fe\u7684\u751f\u547d\u5468\u671f\u7684\u610f\u4e49<\/h6>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>SwiftUI \u8bd5\u56fe\u6de1\u5316\u89c6\u56fe\u751f\u547d\u5468\u671f\u7684\u6982\u5ff5\uff0c\u5728\u5927\u591a\u6570\u573a\u666f\u4e0b\u786e\u5b9e\u5b9e\u73b0\u4e86\u5b83\u7684\u8bbe\u8ba1\u76ee\u6807\u3002\u5f00\u53d1\u8005\u5373\u4f7f\u4e0d\u4e86\u89e3\u6587\u672c\u4e0a\u8ff0\u7684\u5185\u5bb9\uff0c\u4e5f\u53ef\u4ee5\u8ba9 SwiftUI \u7684\u4ee3\u7801\u5728\u65e5\u5e38\u4e2d\u53d1\u6325\u51fa\u4e0d\u9519\u7684\u6548\u7387\u3002\u4f46\u5982\u679c\u80fd\u591f\u5bf9\u89c6\u56fe\u7684\u751f\u547d\u5468\u671f\u6709\u66f4\u6df1\u5165\u7684\u4e86\u89e3\uff0c\u5c06\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u5728\u4e00\u4e9b\u7279\u5b9a\u7684\u573a\u5408\u63d0\u9ad8\u4ee3\u7801\u7684\u6267\u884c\u6548\u7387\u3002\u4e0b\u6587\u5c06\u4e3e\u51e0\u4e2a\u4f8b\u5b50\u3002<\/p>\n\n\n\n<p id=\"\u8f7b\u91cf\u5316\u7684\u6784\u9020\u5668\"><strong>\u8f7b\u91cf\u5316\u7684\u6784\u9020\u5668<\/strong><\/p>\n\n\n\n<p>\u76ee\u524d\uff0c\u5f88\u591a SwiftUI \u7684\u5f00\u53d1\u8005\u90fd\u5df2\u7ecf\u6ce8\u610f\u5230\u4e86\u7ed3\u6784\u4f53\u5b9e\u4f8b\u4f1a\u88ab\u591a\u6b21\u521b\u5efa\u7684\u95ee\u9898\u3002\u5c24\u5176\u5728 WWDC 2020 \u7684\u4e13\u9898\u4e2d\u5df2\u7ecf\u660e\u786e\u544a\u77e5\u5e94\u521b\u5efa\u5c3d\u53ef\u80fd\u8f7b\u91cf\u5316\u7684\u7ed3\u6784\u4f53\u6784\u9020\u5668\u540e\uff0c\u5f00\u53d1\u8005\u5df2\u7ecf\u5c06\u5f88\u591a\u539f\u672c\u5728\u6784\u9020\u5668\u4e2d\u8fdb\u884c\u7684\u6570\u636e\u51c6\u5907\u5de5\u4f5c\u8f6c\u79fb\u5230\u4e86 onAppear \u4e2d\u8fdb\u884c\u3002<\/p>\n\n\n\n<p>\u8fd9\u5728\u76f8\u5f53\u7a0b\u5ea6\u4e0a\u6539\u5584\u4e86\u56e0\u591a\u6b21\u521b\u5efa\u5b9e\u4f8b\u800c\u5f15\u53d1\u7684\u6548\u7387\u95ee\u9898\u3002<\/p>\n\n\n\n<p id=\"\u8ba9\u590d\u6742\u7684\u4efb\u52a1\u4ec5\u6267\u884c\u4e00\u6b21\"><strong>\u8ba9\u590d\u6742\u7684\u4efb\u52a1\u4ec5\u6267\u884c\u4e00\u6b21<\/strong><\/p>\n\n\n\n<p>\u4f46\u662f\uff0conAppear \u6216 task \u4e5f\u5e76\u975e\u53ea\u4f1a\u6267\u884c\u4e00\u6b21\uff0c\u5982\u4f55\u4fdd\u8bc1\u8ba9\u67d0\u4e9b\u8d1f\u62c5\u8f83\u91cd\u7684\u4efb\u52a1\u53ea\u5728\u9875\u9762\u4e2d\u6267\u884c\u4e00\u6b21\u5462\uff1f\u5229\u7528@State \u7684\u751f\u547d\u5468\u671f\u540c\u89c6\u56fe\u7684\u751f\u547d\u5468\u671f\u4e00\u81f4\u7684\u7279\u6027\uff0c\u4fbf\u53ef\u4ee5\u5f88\u597d\u7684\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">struct TabViewDemo1: View {\n    @State var selection = 1\n    var body: some View {\n        TabView(selection: $selection) {\n            TabSub(idx: 1)\n                .tabItem { Text(\"1\") }\n            TabSub(idx: 2)\n                .tabItem { Text(\"2\") }\n        }\n    }\n}\n\nstruct TabSub: View {\n    @State var loaded = false\n    let idx: Int\n    var body: some View {\n        Text(\"View \\(idx)\")\n            .onAppear {\n                print(\"tab \\(idx) appear\")\n                if !loaded {\n                    print(\"load data \\(idx)\")\n                    loaded = true\n                }\n            }\n            .onDisappear{\n                print(\"tab \\(idx) disappear\")\n            }\n    }\n}\n\n\/\/ OutPut\ntab 1 appear\nload data 1\ntab 2 appear\nload data 2\ntab 1 disappear\ntab 1 appear\ntab 2 disappear\ntab 2 appear\ntab 1 disappear\ntab 1 appear<\/pre>\n\n\n\n<p id=\"\u51cf\u5c11\u89c6\u56fe\u7684\u8ba1\u7b97\"><strong>\u51cf\u5c11\u89c6\u56fe\u7684\u8ba1\u7b97<\/strong><\/p>\n\n\n\n<p>\u5728\u524d\u6587\u7684\u89c6\u56fe\u503c\u6811\u4ecb\u7ecd\u4e2d\u6211\u4eec\u63d0\u5230\uff0c\u5f53 SwiftUI \u91cd\u5efa\u8be5\u6811\u65f6\uff0c\u5982\u679c\u6811\u4e0a\u67d0\u4e2a\u8282\u70b9\uff08\u89c6\u56fe\uff09\u7684 Source of truth \u6ca1\u6709\u53d1\u751f\u53d8\u5316\uff0c\u5c06\u4e0d\u91cd\u65b0\u8ba1\u7b97\uff0c\u76f4\u63a5\u4f7f\u7528\u65e7\u503c\u3002\u5229\u7528\u8fd9\u4e2a\u7279\u6027\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06\u89c6\u56fe\u7ed3\u6784\u4f53\u4e2d\u7684\u67d0\u4e9b\u533a\u57df\u7684\u5b9a\u4e49\u62c6\u5206\u6210\u53ef\u88ab\u8282\u70b9\u627f\u8ba4\u7684\u5f62\u5f0f\uff08\u7b26\u5408 View \u534f\u8bae\u7684\u7ed3\u6784\u4f53\u521b\u5efa\u7684\u89c6\u56fe\uff09\uff0c\u4ee5\u63d0\u9ad8\u89c6\u56fe\u6811\u7684\u5237\u65b0\u6548\u7387\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">struct UpdateTest: View {\n    @State var i = 0\n    var body: some View {\n        VStack {\n            let _ = print(\"root update\")\n            Text(\"\\(i)\")\n            Button(\"change\") {\n                i += 1\n            }\n            \/\/ circle \u5728\u6bcf\u6b21\u5237\u65b0\u65f6\u90fd\u4f1a\u91cd\u65b0\u8ba1\u7b97\n            VStack {\n                let _ = print(\"circle update\")\n                Circle()\n                    .fill(.red.opacity(0.5))\n                    .frame(width: 50, height: 50)\n            }\n        }\n    }\n}\n\/\/ Output\nroot update\ncircle update\nroot update\ncircle update\nroot update\ncircle update\n<\/pre>\n\n\n\n<p>\u5c06 Circle \u62c6\u5206\u51fa\u6765<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">struct UpdateTest: View {\n    @State var i = 0\n    var body: some View {\n        VStack {\n            let _ = print(\"root update\")\n            Text(\"\\(i)\")\n            Button(\"change\") {\n                i += 1\n            }\n            UpdateSubView()\n        }\n    }\n}\n\nstruct UpdateSubView: View {\n    var body: some View {\n        VStack {\n            let _ = print(\"circle update\")\n            Circle()\n                .fill(.red.opacity(0.5))\n                .frame(width: 50, height: 50)\n        }\n    }\n}\n\n\/\/ Output\nroot update\ncircle update\nroot update<\/pre>\n\n\n\n<h6 class=\"wp-block-heading\">\u603b\u7ed3<\/h6>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>SwiftUI \u4f5c\u4e3a\u4e00\u4e2a\u5e74\u8f7b\u7684\u6846\u67b6\uff0c\u5927\u5bb6\u5bf9\u5b83\u7684\u4e86\u89e3\u8fd8\u4e0d\u591f\u6df1\u5165\u3002\u968f\u7740\u5b98\u65b9\u6587\u6863\u3001WWDC \u4e13\u9898\u7684\u4e0d\u65ad\u5b8c\u5584\uff0c\u66f4\u591a\u9690\u85cf\u5728 SwiftUI \u80cc\u540e\u7684\u539f\u7406\u548c\u673a\u5236\u5c06\u88ab\u5f00\u53d1\u8005\u6240\u8ba4\u8bc6\u5e76\u638c\u63e1\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 UIKit\uff08AppKit\uff09\u7684\u4e16\u754c\u4e2d\uff0c\u901a\u8fc7\u6846\u67b6\u63d0\u4f9b\u7684\u5927\u91cf\u94a9\u5b50\uff08\u4f8b\u5982 viewDidLoad\u3001viewWill [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"_links":{"self":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/5602"}],"collection":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5602"}],"version-history":[{"count":5,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/5602\/revisions"}],"predecessor-version":[{"id":5607,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/5602\/revisions\/5607"}],"wp:attachment":[{"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5602"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5602"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5602"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}